DE1063065B - Practice bullet - Google Patents

Description

GERMAN

The invention relates to a training projectile. Practice bullets are already known which, although for the Shooting from guns is intended, but are equipped with a tail unit and as a result of the use of a The tube with a weak twist is given a slight twist to avoid deviations of the projectile from the Avoid trajectory that arise as a result of an asymmetry of the shape or the mass distribution without twist would. These projectiles, which are mainly launched at supersonic speeds, are usually provided with a tail unit, the diameter of which is larger than the bullet caliber, and which is after exiting from the pipe spreads.

A training bullet of this type has the disadvantage that it cannot be reused. It must can also be manufactured with the same care and the same tolerances as sharp projectiles to meet the same ballistic conditions as these.

The projectile according to the invention, however, should be cheap, simple in construction, robust and self be of great accuracy at supersonic speed.

But a projectile equipped with a tail unit is only stable if its center of gravity is with sufficient distance in front of the point of application of the air resistance to generate the torque that the Projectile at any moment in the direction of the flight path given by the launch conditions seeks to keep it as large as possible.

One is therefore required to choose the dimensions and materials so that the focus of the Floor is moved as far forward as possible.

This is the case with a projectile provided with a cartridge, the projectile body with a guide ring and is provided with a tail tube carrying a tail unit corresponding to the caliber and has a marker charge which is ignited by a head detonator, according to the invention thereby achieved that the projectile body is cut transversely at the rear in the area of its caliber part and that the Tail tube provided with the tail unit, the diameter of which is considerably smaller than that of the projectile body is inserted into the projectile body from behind.

Preferably, the training projectile according to the invention is designed so that the front of the guide ring located part of the projectile body tapers conically towards the front and is known to be behind has a central recess, in the forehead of which the tail pipe provided with the tail unit is attached, the recess being larger in diameter than the tail tube, so that between both an annular cavity remains. On this training floor

Applicant:
Institution for Development
of inventions and commercial
Applications ENERGA,
Vaduz (Liechtenstein)

Representative: Dipl.-Ing. G. Weinhausen, patent attorney, Munich 22, Widenmayerstr. 46

Beanspraclite priority: Switzerland from March 8th and October 25th, 1956

2

One gets a projectile whose body is essentially only conical and whose rear part s, corresponding to the caliber, o is easy that the center of gravity of the entire projectile, especially if you look at the tail pipe and the; Tail unit made of light metal, is close to the largest diameter of the bullet as a result indicates the projectile at a given total weight and one the accelerations and the Firing pressures appropriate resistance, the best possible stability and accuracy. .-> -.

In a known projectile, which also consists of a projectile body concentrated at the front and a there is a tail tube screwed in from behind, the body of the projectile is not cut off transversely to the axis of the projectile, but after. tapered through behind, a tail tube almost completely surrounding it tapered hollow body extended, which carries the tail unit. This bullet that has a foam head is intended to combat street tumult and is therefore only for short distances certainly. So it does not meet the aggravating requirements mentioned at the beginning.

According to a further embodiment of the projectile according to the invention, the marking charge is located in the front part of the tail tube, this one here at the same time serves as an expansion chamber and outlet line for the smoke gases generated during impact.

909 580/47

Claims (5)

A tracer set can be provided in a carrier which is inserted into the rear end of the tail tube and is thrown backwards when the marker charge is ignited. But it is also possible to provide one or more tracer sets in the transversely cut caliber part of the projectile body eccentrically to the projectile axis. When the projectile is rotated during flight, these tracer sets then move on a helical path, which considerably increases the visibility of the tracer set. In the drawing, two embodiments of a projectile according to the invention are shown, for example, namely FIG. 1 shows a half longitudinal section through a first embodiment, FIG. 2 shows a longitudinal section through this projectile after it has hit the target, and FIG. 3 shows a longitudinal section through a second Embodiment. In the case of the projectile shown in FIGS. 1 and 2, the conical or approximately conical projectile body 1 has a head fuse 2 at its front end, a guide ring 3 at its rear largest diameter and a recess 4 in the rear part. A cylindrical tail tube 5 is screwed into the projectile body 1 from behind through the recess. The tail tube 5 carries a tail unit 6 at its rear end, the hub of which is closed by a carrier 7 for a tracer set 8. A marker charge 9 is located in a can 10, which is held in the front part of the tail tube 5 in that an outwardly directed flange 11 of the can 10 is clamped between the front end face of the tail tube and an annular disk 12 which rests against an annular shoulder 13 the threaded hole in the projectile body 1 creates. The projectile body 1 is preferably made of steel, while the tail tube 5 and the tail unit 6 are made of light metal. The projectile is in a cartridge, not shown, before launch. If the projectile hits, the percussion fuse 2 transmits the fire to the marking charge 9. The resulting smoke gases relax in the tail pipe 5 and hurl the tracer carrier 7 backwards so that the target marking smoke cloud can escape. In the second embodiment shown in Fig. 3, the marker charge 9 a is not arranged in the tail tube 5, but in a corresponding recess of the projectile body la. It is held in this recess to the rear by an end plate 14 which in turn is fixed in the projectile body by the tail tube 5 screwed into the projectile body from behind. When the marker charge 9 a is ignited, this end plate gives way so that the smoke gases can escape from the tail pipe 5 to the rear. In the rear end face of the projectile body la two tracer sets 15 and 16 are provided in corresponding bores outside of the tail tube 5 at opposite points. When fired, these tracer sets are ignited by the propulsion gases. Since the tail pipe 5 is open at the rear in this second embodiment, it is acted upon by the propulsion gases both from the outside and from the inside when it is fired, so that it can be carried out particularly easily. Patent claims: 1. Training projectile for guns with a weak twist with a cartridge receiving the projectile, the projectile body is provided with a guide ring and a centrally arranged tail tube, has a head fuse and a marker charge behind it, characterized in that the projectile body (1, la) in the rear area its caliber part is cut transversely and that the tail tube (5 ) provided with the tail unit (6) , the diameter of which is substantially smaller than that of the projectile body, is inserted into the projectile body from behind. 2. Training projectile according to claim 1, characterized in that the part of the projectile body (1) located in front of the guide ring (3) tapers conically towards the front and has a central recess (4) in the forehead with the rear in a known manner the tail tube (5 ) provided with the tail unit (6) is attached, the recess (4) being larger in diameter than the tail tube (5) , so that an annular cavity remains between the two. 3. Training projectile according to claim 1, characterized in that the marking charge (9) is arranged in the front part of the tail tube (5) . 4. Training projectile according to claim 1, characterized in that the marking charge (9) is accommodated in a bush (10) arranged in the front part of the tail pipe (5) and having a front flange (11) between the front end face of the tail pipe (5 ) and a mating surface (13) of the projectile body (1) is jammed. 5. Training projectile according to claim 1, characterized in that one or more tracer sets (15, 16) arranged eccentrically to the projectile axis are used in the transversely cut caliber part of the projectile body (la) . Considered publications:
British Patent No. 460 842. 1 sheet of drawings © 909 580/47 7.59